Case-lock.



B. S. ROYER.

CASE LOGK.

APPLICATION FILED JULY 26, 1912.

1,050,394. I PatentedJan. 14,1913.

IVITNESSES: 6 I NV5E1;0R.

/5 0 67 g g E// ATTORNEY.

ELLIS SANFORD ROYER, OF ST. LOUIS, MISSOURI.

CASE- LOCK.

Specification of Letters Patent.

Patented Jan. 14,1913.

Application filed July 26, 1912. Serial No. 711,711.

To all whom it may concern Be it known that I, ELLIS S. Home, citizen ofthe United States, residing at St. Louis, State of Missouri, haveinvented certain new and useful Improvements in Case- Locks, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in case-locks, and it consistsin the novel details of construction more fully set forth in thespecification and pointed out in the claims.

I In the drawings, Figure 1 is a front face of a. watch-case, with partsin section show ing one form of my invention applied thereto; Fig. 2 isa cross-section on the line 22 of Fig. 1; Fig. 3 is a cross-section onthe line 3-3 of Fig. 1; Fig. t is a perspective of the locking leverdetached; Fig. 5 is a view similar to Fig. 1 showing a modification oflock; and Fig. 6 is a cross-section on the line 6-6 of Fig. 5.

The present invention is an improvement on the ease-lock forming thesubject-matter of my U. S. Patent, Number 9183M, dated April 18, 1909;and while contemplating the several objects and possessing the sev eraladvantages inherent in the patented construction, the improvement hereinis materially simplified over the patented one in particulars which makethe last design the more desirable.

In detail the invention may be described as follows:

Referring to the drawings, and for the present to Figs. 1 to 4inclusive, 1 represents the case center of a watch, 2 the front bezel,and 3 the rear bezel thereof, the said bezels being screwed to thecenter as well understood in the art. The winding stem 4 is providedwith the usual milled head 5, said stem being of the reciprocatingvariety, adapted to wind the watch when pushed inward, and to set thehands when pulled outward, all as fully understood in the art. In thepreferred embodiment of my invention I provide a curved lever 6 of thinrigid metal, through the fulcrum boss 7 of which I pass a screw-pin 8,the latter being driven through, and supported by, the flanges a, a.over which the sections 2, and 3, are screwed. In the groove formedbet-ween the flanges a, a, the lever 6 thus supported by a pin 8, rests,one end of the lever being forked, the

fork members d, (Z, spanning the narrow neck n formed between the innerterminal polyg onal end of the winding stem a, and the cylindricalportion contiguous thereto, the connection permitting an oscillation ofthe lever about its fulcrum'pin S with a longitudinal movement of thestem (see dotted posit-ion of the parts in Fig. 1). The opposite end ofthe lever 6 is provided with crossarms 9, 9, free to traverse a slot orgroove 8 in the flanges a, a, the arms being adapted to rest, with aninward movement of the stem 4, in notches, depressions or recesses r, r,in the members 2 and 3 respectively.

The operation is apparent from the foregoing:-To unscrew the sections 2and 3 from the sect-ion 1, the stem 4 is retracted (or pulled out to theposition corresponding to that at which the stem is operated to set thehands of the watch) in which movement the lever 6 is oscillated aboutits fulcrum pin sufficiently to cause the locking arms 9, 9, to clearthe depressions or recesses 1 1", thus freeing the sections 2, 3, fromthe arms and permitting them to be unscrewed from the center section 1.lVhen the sections are screwed back on the section 1, the recesses r, r,are brought into alinement with the slot- 8, and by pushing in the stem&, (to position for winding the watch or to normal position) the lever(3 is oscillated to force the arms-9, 9, into the recesses, and thus thesections 2, 3, are held locked.

In the form described, the oscillation of the lever 6 is done by hand,that is to say, it is not automatic; but I may so modify theconstruction as to eflect the locking of the sections 2, 3,automatically. This modification is shown in Figs. 5 and 6. In that caseI secure (by means of a pin 12) a flexed spring member 10 of springsteel, the same being mounted between the flanges a, a, the said memberor band being provided near one end with looking arms 11, 11,corresponding to the arms 9, 9, and terminating at the end adjacent thearms in a push pin 12, preferably near the boss 13 through which thestem 4t passes. The flexed band 10 normally tends to expand orstraighten and hence when released forces the pushpin 12 (which operatesfreely through the center section 1) outwardly, the locking arms 11, 11,settling into recesses corresponding to r, r, in the form firstdescribed. In the modification, to release the sections 2, 3, theoperator simply pushes in the pin 12 until the arms l1, 11, aredisengaged from the sections 2, 3, holding the said pin in such positionuntil the sections 2, and 3, are unscrewed. To lock the sections, thelatter are screwed back on the center section 1, and when the recessesthereof come opposite the arms 11, 11, (the pin 12 having previouslybeen released) the said arms automatically spring into their recessesunder the resilient action of the steel band 10 whereupon the locking ofthe bezel sections becomes automatic. In either form however, the member(4, 12) is a push member, both releasing the bezel sections with asliding movement of the member, the locking being accomplished by aninward movement of the member a, and the unlocking by an outwardmovement; and the unlocking be ing accomplished by an inward push of themember 12, the locking resulting automatically by an outward movementflowing from the spring of the metal of the band 10.

Having described my invention what I claim is 1. In a watch providedwith a case-center, a bezel therefor, a locking member oscillating inthe general plane of the watch and engaging the bezel, and areciprocating pushmember moving in a plane substantially parallel to theplane of oscillation of the locking member and controlling said member.

2. In combination with a Watch casecenter, a reciprocating winding stemtherefor, a screw-bezel, a lever pivotally mounted opposite the innercircumferential wall of the case center and having one end in engagementwith the stem, whereby said lever may be oscillated, and means on theopposite end of the lever for engaging the bezel and locking the sameagainst rotation by a movement of the stem in one direction.

3. In combination with a watch casecenter, a reciprocating winding stemthere for, a screw-bezel, a lever pivotally mount ed in the case-centeropposite the inner cir cumferential wall thereof, a fork terminal at oneend of the lever, a neck formed in the body of the winding stem andengaged by the said forked end of the lever, a locking arm at theopposite end of the lever projecting outwardly from the body of thelever, the case-center being provided with a slot for the traverse ofsaid arm with an oscillating movement of the lever, and the bezel havinga recess adapted to be brtmght opposite said slot for engagement withthe locking arm upon a movement of the winding stem to oscillate thelever in proper direction to effect such engagement.

at. In combination with a case-center, a screw-bezel therefor, a lockingmember 0 cillating in the general plane of the watch and engaging thescrew-bezel, and a reciprocating push member on the case center movingin substantially the same plane and controlling said locking member.

In testimony whereof I afiix my signature, in presence of two witnesses.

ELLIS SANFORD ROYEIK.

Vitnesses EMIL STAREK, Jos. A. Micnnt.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

